DRIVING  THE  NEW  YORK 
SUBWAY 


MARCH  24,  1900 
OCTOBER  27,  1904 


Avery  Architectural  and  Fine"  Arts  Library 
Gift  of  Seymour  B.  Durst  Old  York  Library 


Digitized  by  the  Internet  Archive 
in  2014 


http://archive.org/details/drivingnewyorksuOOinge 


Stilting  fljc  Hely  Moris 


4> 


March  24,  1900 
October  27,  1904 


The  Ingersoll-Sergeant  Drill  Company 
New  York 


SEYMOUR  DURST 


The  Ingersoll-Sergeant  Drill 
Company 

Officers 

W.  L.  SAUNDERS  President 
JOHN  A.  McCALL  \ 

J.  P.  GRACE  [     .      ,  Vice-presidents 

GEO.  R.  ELDER  ) 

GEO.  DOU15LEDAY  Treasurer 
W.  R.  GRACE  .  Secretary 


The  Ingersoll-Sergeant  Drill  Company 

Main  Office 
26  Cortlandt  Street,  New  York  City 

Offices 

Cleveland,  Ohio  ....  Williamson  Building 
Chicago,  Illinois,  84  Van  Buren  Street,  Old  Colony  Building 
Philadelphia,  Pennsylvania     .        .        .       Arcade  Building 

.  Park  Building 
77  Oliver  Street 
.    Fullerton  Building 
17 iS  California  Street 
21  Fremont  Street 
191 S  Morris  Avenue 
226  Southwest  Temple  Street 
300  Main  Street 
Fourth  and  Wacouta  Streets 
310  First  Avenue 
.    Coristine  Building 
Dolores  No.  20,  Mexico,  D.  F. 
1 14  Queen  Victoria  Street 
187  Clarence  Street 
P.  O.  Box  152 
P.  O.  Box  1S09 
W.  R.  Grace  &  Co. 
.  W.  R.  Grace  &  Co. 
51  Rue  de  la  Chaussee,  D'Antin 
Kaiser  Wilhelm  Strasse  2 
Galemaya  5 


Pittsburg,  Pennsylvania  . 
Boston,  Massachusetts  . 
St.  Louis,  Missouri 
Denver,  Colorado  . 
San  Francisco,  California 
Birmingham,  Alabama 
Salt  Lake  City,  Utah      .  22 
Butte,  Montana 
St.  Paul,  Minnesota 
Seattle,  Washington 
Montreal,  Canada 
Mexico  City    .  2a  De 

London,  England 
Sydney,  New  South  Wales 
Kalgoorlie,  West  Australia 
Johannesburg,  South  Africa 
Valparaiso,  Chili 
Lima,  Peru 
Paris,  France  . 
Berlin,  Germany 
St.  Petersburg,  Russia 


Cable  Address 

"  Ironchain  New  Vork  "  "  Enyam  London  " 

"Airmachine  Berlin  " 
Broomhall's,  Leiber's  and  ABC  Codes  used 
When  referring  to  this  catalogue  use  the  cipher  word 


Driving  the  New  York  Subway 


N  front  of  the  City  Hall,  on  March 
24,  1900,  Mayor  Robert  A.  Van 
Wyck  turned  the  first  spadeful  of 
earth  on  the  New  York  Rapid  Transit 
Subway.  On  October  27,  1904, 
the  new  system  was  opened  for  public  service.  This 
latter  date  marks  practically  the  completion  of  one  of 
the  greatest  engineering  feats  in  history.  From  now 
on  some  of  the  millions  of  travelers  on  the  New  York 
transportation  systems  will  be  withdrawn  from  the 
surface  and  elevated  lines  of  the  city  and  will  be 
whisked  along  underground  at  breathless  speed  over 
a  roadway  as  smooth  as  that  of  the  finest  railway. 
The  traveler,  as  he  makes  this  smooth  dash  through 
the  Subway,  will  little  realize  the  labor,  money  and 
brain  matter  that  has  been  the  price  of  his  comfort.  It 
is  a  good  time  to  stop  and  consider  —  "  lest  we  forget." 


5 


Dntoing  tl)c  j^rtu  Povft  subway 


To  build  an  underground  railway  15  miles  long 
is  in  itself  something  of  an  undertaking.  To  build 
such  a  railway  under  the  streets  of  the  second  city 
in  the  world,  without  injury  to  buildings  or  interrup- 
tion to  traffic,  is  quite  another  and  larger  proposition. 
Yet  the  work  has  been  done — and  another  artery 
has  been  added  to  the  throbbing  transportation 
system  of  the  great  city. 

The  new  system  will  always  be  known  as  the 
Subway,  yet  it  is  not  all  underground.  Of  the  20.8 
miles  included,  5.8  miles  are  a  viaduct.  Most  of 
this  is  at  the  extreme  northern  end  of  the  line.  <  >f 
the  remaining  15  miles,  10.46  were  built  on  the  "cut 
and  cover  "  system,  and  4.54  were  tunneled. 

The  greater  part  of  the  work  lay  where  questions 
of  economy  and  local  conditions  demanded  a  mini- 
mum depth,  and  there  the  "  cut  and  cover  "  method 
was  employed.  The  excavation  was  made  in  open 
cut,  in  which  a  steel  structure  has  been  built,  sup- 
porting the  roof  and  sides.  The  cross  section  is 
rectangular.  Steel  columns,  rising  between  the 
tracks  from  the  concrete  floor,  bear  the  steel  roof 
beams,  between  which  concrete  arches  are  turned. 
The  sides  of  the  section  are  of  concrete,  and  top, 
bottom  and  sides  are  covered  with  a  water-proof 
layer  to  exclude  moisture.    The  height  in  the  clear 


6 


Brtbmg  ttye  0tXo  got*  ^utotwar 


above  rails  is  13  feet  and  the  width  varies  with  the 
number  of  tracks — two,  three,  four  and  five,  in 
different  sections. 


Portal  to  the  Tunnel  under  Central  Park 


Tunnels  were  driven  where  the  rugged  topog- 
raphy of  the  upper  island  demanded.  There  is 
nothing  novel  in  their  construction.  They  are  con- 
crete lined  and,  where  ample  head  room  was  avail- 
able, are  spanned  by  a  single  arch.  In  other  places 
the  roof  is  a  two  and  three-center  arch. 


7 


IDnfcmg  tljc  jMu  pot*  sulnuay 


The  open  excavation  for  the  Subway  had  to  be 
at  least  18  feet  deep.  Most  of  the  sewers  in  New 
York  are  less  than  13  feet  deep,  while  water  and  gas 
mains  are  not  so  deep.  This  meant  that  all  the 
latter  sub-surface  construction  had  to  be  removed 
and  replaced  without  interruption.  It  was  a  nice 
problem,  but  it  was  done.  In  one  place  a  complete 
new  sewer  system  was  built  leading  to  the  East  River 
instead  of  to  the  Hudson. 


Open  Excavation  on  Fourth  Avenue 
8 


mitring  tljc  j^eto  potft  ^iilrtoa? 


To  the  engineer  and  the  man  of  affairs,  figures 
are  more  impressive  than  mere  statements.  Some 
of  the  principal  quantities  involved  in  the  construc- 
tion of  the  Subway  are  given,  taken  from  the  report 
of  the  chief  engineer  : 


Total  length 
Earth  excavated  . 
Rock  excavated  . 
Rock  tunneled 
Steel  used  .... 
Cast-iron  used 
Concrete  used 
Brick  used 
•  Waterproofing 
Length  of  track,  underground 
Length  of  track,  elevated 
Contract  price 

Value  of  contract  equipment 
Contract  time 


[09,570  feet 
1,700,228  cubic  yards 
921,182  cubic  yards 
368,606  cubic  yards 
65,044  tons 
7,901  tons 
489,122  cubic  yards 
18.519  cubic  yards 
775,795  square  yards 
245,514  feet 
59,766  feet 
$35,000,000 
6,000,000 

4]/2  years 


An  examination  of  this  list  shows  that  by  far 
the  most  costly  item  was  that  of  the  rock  excavation 
in  open  cut  and  tunnel.  The  rock  encountered  was 
almost  entirely  mica  schist  and  gneiss — the  latter 
approaching  granite  in  its  hardness.  Evidently  the 
cost  and  time  limit  demanded  the  use  of  the  best 
machine  methods.  Compressed  air  was  chosen  as 
the  motive  power  for  tools,  because  of  its  ease  of 


9 


©tttomg  tl)e  /Sett  gorfe  ^ubtwar 


transmission,  its  comfort  in  the  workings  and  its 
adaptability  to  rock  drills,  hoists  and  pneumatic 
riveting  tools.  It  is  unquestionably  true  that  without 
the  air  compressor  and  rock  drill  the  Subway  could 
never  have  been  built  within  the  specified  limits  of 
time  and  cost. 

The  main  contract  was  subdivided  and  let  to  a 
number  of  sub-contractors.  Some  of  these  contrac- 
tors installed  their  own  compressor  plants,  others 
united  in  a  plant  to  supply  their  sections.  In  every 
case,  the  result  wras  a  central  compressed  air  plant, 
from  which  pipe  lines  distributed  the  air  to  the  rock 
drills  at  work  in  the  excavations  and  the  pneumatic 
tools  used  in  the  steel  construction.  One  great 
advantage  of  this  system  of  power  was  seen  in  the 
absence  of  scattered  boilers,  with  their  heat  and 
smoke,  shifting  "from  place  to  place  as  the  work 
progressed.  More  effective  work  was  done  by  the 
tools,  as  a  result  of  the  higher  pressure  available 
with  air.  This  system  also  permitted  the  reduction 
of  the  •  number  of  licensed  engineers,  required  by 
law  at  each  steam  plant ;  the  concentration  of  danger 
from  boiler  explosion  at  one  point;  and  the  higher 
economy  to  the  contractor  secured  by  one  high-grade 
centralized  power  plant.  Compressed  air  had 
proved  its  reliability  in  a  dozen  earlier  public  enter- 

1 1 


prises  and  it  was  adopted  in  driving  the  Subway 
because  of  its  recognized  value.  It  is  no  exaggera- 
tion to  say  that  compressed  air  made  the  Subway 
possible. 


The  Subway  is  finished.  The  clatter  of  drills 
and  the  roar  of  the  blast  is  no  longer  heard  in  the 
land  of  Father  Knickerbocker.  The  public  breathes 
freely  once  more.  All  hail  to  compressed  air,  which 
made  the  Subway  possible — the  good  angel  alike  of 
contractor  and  citizen. 


©rtiring  tljc  ^et»  povh  ^ubm^ 


Dn\nng  tt)c  j5c\u  Porft  sub\uav 


I ngersoll -Sergeant   Machinery   in  Driving 
the  Subway 

In  the  vast  enterprise  just  outlined  Ingersoll- 
Sergeant  air  compressors  and  rock  drills  played  an 
important  part.  The  Subway,  impressive  as  it  is  in 
completion,  was  not  spectacular  in  process  of  con- 
struction. It  was  not  intended  to  be  driven  at  a 
record-breaking  rate.  Steady  and  unbroken  prog- 
ress was  the  keynote  of  advancement.  Delays 
of  days,  hours  even,  counted  against  the  progress 
and  had  to  be  avoided  so  far  as  human  foresight 
could  provide.  The  limits  of  man's  physical  endur- 
ance were  recognized  and  so  the  army  of  workmen 
was  divided  into  shifts.  Not  so  with  the  machines. 
They  were  required  to  keep  everlastingly  at  it,  with- 
out relief,  without  a  rest.  The  race  was  not  to  be  to 
the  swift,  but  to  the  strong.  The  question  was  not 
one  of  speed  alone,  but  of  speed  and  endurance  and 
low  operating  cost.  All  these  things  were  appre- 
ciated by  the  Subway  contractors  and,  wise  in  the 
lessons  of  former  contracts,  they  chose  Ingersoll- 
Sergeant  machines — machines  whose  economy,  sim- 
plicity and  reliability  had  been  proved  by  years  of 
hard  service. 


14 


Of  the  twenty-six  air  compressors  used  by  the 
various  contractors,  sixteen  were  built  by  the  Inger- 
soll  -  Sergeant  Drill  Company.  Their  size  and 
capacities  are  given  hereafter.  These  machines  fur- 
nished compressed  air  for  rock  drills,  pumps,  hoists 
and  pneumatic  tools.  Following  the  compressors 
will  be  seen  a  list  of  the  one  hundred  and  ninety- four 
drills  used.  These  tabulated  lists  make  an  impres- 
sive array  and  speak  volumes  for  the  merits  of  the 
machines.  They  show  how  large  a  part  Ingersoll- 
Sergeant  machinery  had  in  driving  the  Subway. 


Ingersoll-Sergeant  Air  Compressors  in  the  Subway 


No. 

Size  and  Class 

Cu.  Ft.  Cap. 

H.-P. 

18  and  iS}{  x  24-inch,  Class  UA" 

1312 

262 

2 

22  and  22/4  x  24-inch,  Class  "A" 

I946 

388 

8 

24  and  24^  x  30-inch,  Class  "A" 

9784 

I936 

2 

22  and  34,  30-X  and  30 %  x  24- 
inch,  Class  "  G"  . 

7694 

720 

I 

22  and  40',  22  j4  and  36%'  x  48- 
inch,  Class  "  C  "-Corliss 

3350 

664 

I 

24  and  44,  24  lX  and  24^  x  48- 
inch,  Class  "  C  "-Corliss 

3422 

690 

16 

28,008 

4660 

15 

DvMng  tlic  jMu  Porh  ^uinuav 


Ingersoll-Sergeant  Rock  Drills  in  the  Subway 


jioiorooK,  ^anoi  ana  uaiy    ....  j/ 

Ira  A.  Shaler   4° 

Degnon  McLean    ......  13 

Naughton  and  Co.         .....  36 

Karrell  and  Hopper       .....  23 

Mi  Mullen  and  Mc  Heart   5 

John  Pilkington     ......  10 

New  York  Tunnel  Co.  24 


Drilling  from  a  Platform  in  the  Broadway  "  Ditch  " 


16 


bribing  tl)c  &t*w  gorfi  ^ubtDar 


Ingersoll-Sergeant   Ticket  Cancellers  in 
the  Subway 

There  can  be  no  delay  in  the  collection  of 
tickets  at  a  Subway  station.  To  facilitate  the  collec- 
tion of  fares,  insure  against  the  re-use  of  tickets  and 
to  increase  the  capacity  of  the  passenger  stations, 
one  hundred  ticket  cancelling  boxes,  built  by  the 
Ingersoll-Sergeant  Drill  Company,  have  been  in- 
stalled at  the  passenger  stations  along  the  Subway. 
They  are  handsome  little  boxes,  of  walnut  and  plate 
glass,  and  have  demonstrated  their  usefulness  in 
•over  twenty  years  of  service  on  the  elevated  roads, 
railways  and  ferries  of  this  country  and  England. 


Drnnng  tl)c  ftnv  Porfc  suinuav 


©rftrfng  tl)t  Bfw  gorft  ^ubtrar 


Ingersoll-Sergeant  Compressors  in  the 
Operation  of  the  Subway 

Subway  express  trains  will  run  at  40  miles  an 
hour.  At  such  speeds,  on  a  system  so  vast  and  in- 
tricate as  that  of  the  Subway,  every  precaution  must 
be  taken  to  ensure  the  safety  of  the  public.  With 
this  in  mind,  a  block  system  with  electro-pneumatic 
interlocking  switches  and  signals  has  been  installed, 
as  perfect  as  that  on  the  largest  railway. 

With  so  much  at  stake,  with  so  many  lives  de- 
pendent upon  the  safety  devices,  none  but  appliances 
and  machines  of  the  very  highest  class  could  be 
employed.  And  so  the  compressed  air  for  the  opera- 
tion of  switches  and  signals  is  furnished  by  motor- 
driven  air  compressors  built  by  the  Ingersoll-Sergeant 
Drill  Company,  located  in  seven  sub-stations  along 
the  line.  No  higher  tribute  could  be  paid  to  the 
recognized  qualities  of  Ingersoll-Sergeant  machines — 
reliability,  economy  and  simplicity.  They  have  a 
name  and  a  record  back  of  them. 

One  of  the  Subway  compressors  is  seen  on  the 
opposite  page. 


9 


Driving  tl)c  jMu  Porft  suinuav 


Ingersoll-Sergeant   Machinery  ill  Great 
Public  Utilities 

Wherever  there  has  been  a  great  public  work  to 
do,  with  rock  to  be  excavated,  there  the  machines  of 
the  Ingersoll-Sergeant  Drill  Company  have  been 
found  cheerfully  and  creditably  bearing  their  share, 
and  usually  the  larger  share  of  the  burden.  North, 
South,  Fast,  West,  at  home  and  abroad,  they  are 
everywhere  recognized  as  the  contractor's  mainstay 
— his  faithful  friend  and  ally. 

These  machines,  air  compressors  and  rock 
drills  and  stone  channelers,  are  free  from  the  un- 
fortunate habits  so  discouraging  to  the  active,  pro- 
gressive contractor.  They  never  become  dissatisfied ; 
they  work  as  cheerfully  for  twenty-four  hours  as  for 
eight  hours  in  a  day ;  they  are  proof  against  all 
demoralizing  influences;  they  never  ask  for  a  "  lay- 
off " ;  they  never  get  tired  of  their  job,  and  "  move 
on  " ;  they  are  not  affected  by  the  heat  of  Summer, 
or  the  cold  of  Winter.  They  can  be  depended 
upon,  always  and  everywhere. 

Ingersoll-Sergeant  rock-excavating  machines 
have  made  an  enviable  record.  A  glance  through 
the  list  of  great  public  enterprises  following  will 


20 


bribing  tl)c  Bern  gotfi  ^ubtoar 


show  how  powerful  a  factor  they  have  been  in 
making  practicable  these  huge  works  so  character- 
istic of  modern  civilization. 


Baltimore  and  Ohio  Railroad  Tunnel 

i  Jell  11111W1  t 

V_/d.I  I  ctLllctl  1    L  ctC  111  U   JvclllI  UclU.     1  Ullllci 

Canada 

J-T 1 1  fi  <i  r>  n  Txi^'Pr  T* nnnpl 

XX  UUoUH    XV 1  i  CI      1  UI111CJ 

i>  C  \\     1  OIK. 

New  York  Aqueduct  Tunnel 

New  York 

New  York    New  T-Tavpn  8?  FTartforrl  Railrmrl 

Tunnel        .       .  . 

Connecticut 

Southern  Pacific  Railroad  Tunnel  . 

California 

Vosburg  Tunnel  ...... 

Pennsylvania 

Washington  Aqueduct  . 

D.  C. 

Chicago  Drainage  Canal  .... 

Chicago 

Hallett's  Point  Reef  

New  York 

Detroit  River  ...  ... 

Detroit 

Georgetown  Harbor  ..... 

D.  C. 

Jerome  Park  Reservoir   .       .       .  N  . 

New  York 

Delaware  River 

Pennsylvania 

St.  Mary's  Falls  Canal  

Michigan 

Harlem  River         .       .       .       .       .  . 

New  York 

Toronto  and  Niagara  Power  Company  Tunnel 

Canada 

Gallitzen  Tunnel  ...... 

Pennsylvania 

21 


r>mnng  tlic  jMu  Porn  ^ulrtuav 


I  ngcrsoll-Sergeant   Rock  Drills 

Ingersoll-Sergeant  Rock  Drills  need  no  intro- 
duction to  manager,  engineer  or  contractor.  For 
thirty-five  years  they  have  been  the  standard  of  rock 
drilling  machinery.  They  have  participated  in  every 
great  public  work,  they  have  had  a  part  in  every 
great  private  enterprise  where  rock  excavation  was 
involved.  In  tunnels,  canals,  quarries,  mines,  the 
wide  world  over,  they  have  set  the  pace  for  rapid 
work  and  have  been  the  standard  of  endurance. 
The  extent  of  their  use  has  become  a  measure  of 
progress. 

The  development  of  these  drills  has  been  a 
process  of  evolution  through  thirty-five  years  and 
over  forty  thousand  numbers.  Their  present  forms 
represent  the  survival  of  the  fittest.  The  few  pages 
following  picture  and  classify  the  four  standard 
types  which  long  years  of  hard  service  have  proved 
equal  to  any  demand.  Details  of  size  and  con- 
struction are  found  in  the  Rock  Drill  Catalog, 
which  is  sent  to  those  who  ask  for  it. 


Miring  tyt  /to  gorfe  ^>ubt»ai? 


The  Sergeant  Auxiliary  Valve  Drill 


It  is  distinguished  from  all  others  by  the 
auxiliary  valve  acting  as  a  trigger  to  the  main  air- 
thrown  valve.  Its  blow  is  uncushioned,  its  stroke 
variable.  In  the  hardest  rock,  no  drill  strikes 
harder  or  cuts  more  rapidly.  It  is  a  powerful 
machine  and  under  the  most  severe  conditions,  is, 
without  doubt,  the  most  effective  and  reliable  drill 
on  the  market. 


23 


Drnnng  t lie  jMd  pot*  sulrtuay 


The  Sergeant  Arc  Valve  Tappet  Drill 


In  this,  all  the  objections  to  the  old-time  tappet 
drill  have  been  eliminated  and  the  machine  brought 
up  to  modern  effectiveness.  In  rock  reasonably 
firm,  not  too  hard,  the  variable  stroke  and  slightly 
cushioned  blow  of  this  drill  secure  excellent  results. 
The  valve  movement  is  peculiarly  effective  where 
wet  steam  is  to  be  used,  but  air  is  the  best  agent  to 
employ. 


24 


bribing  tlje  &t\x>  ^orft  ^ubtua^ 


The  New  Ingersoll  Drill 

This  is  a  machine  of  great  usefulness,  with  an 
air-thrown  valve.  In  soft  or  seamy  or  broken  rock, 
it  does  excellent  work,  but  when  hard  rock  is  en- 
countered its  stunning  uncushioned  blow  meets  the 
emergency.  It  is  a  drill  of  great  endurance  and 
capacity — probably  the  best  for  all-around  purposes. 


~5 


Dntomg  tl)c  fttxo  pot*  ^ubuviv 


The  Ingersoll  Eclipse  Drill 


Here  is  the  "old  reliable,"  and  its  friends  are 
legion.  It  is  the  original  of  all  independent  valve 
types.  Its  stroke  is  variable,  its  blow  heavy  and 
uncushioned.  In  rock  of  almost  any  character,  it 
performs  in  a  manner  above  reproach.  Many  of 
the  oldest  users  of  power  drills  consider  it  the  best 
machine  made. 


26 


Ingersoll-Sergeant  Drill  Mountings 

The  illustrations  on  the  four  preceding  pages 
show  the  drills  mounted  on  the  Sergeant  Universal 
Tripod.  There  are  other  forms  of  mounting.  All 
styles  are  listed  below.. 


Sergeant  Universal  Tripod 

Ingersoll  Tripod 

Quadrant  Tripod 

Lewis  Hole  Tripod 

Double  Screw  Tunnel  Column 

Single  Screw  Shaft  Column 


?7 


Driving  tlic  j}c\u  pot*  *uMuav 


I  ngersoll-Sergeant  Air  Compressors 

There  are  many  good  things  characteristic  of 
[ngersoll-Sergeant  Air  Compressors,  but  space  per- 
mits mention  of  only  a  few  ;  exclusive  features  of 
design,  highest  grade  of  materials,  perfect  work- 
manship, thorough  tests.  Hut  the  result  of  them  all 
is  summed  up  in  three  qualities,  qualities  peculiar  to 
I  ngersoll-Sergeant  machines— economy,  simplicity, 
reliability.  A  few  of  jthe  many  types  are  shown 
here,  and  the  Compressor  Catalog,  No.  35,  tells 
more  about  the  in. 


An  I  ngersoll-Sergeant  Corliss  Compressor 


2S 


Ingersoll-Sergeant  Air  Compressors 


Class  "A"  Compressor 


29 


I  ngersoll-Sergeant  Products 
•  •  • 

Quarrying  Machinery 

Steam  Driven  and  Air  Driven  tor  Marble,  Slate 
Sandstone,    Serpentine,  Granite 
and  all  rocks 


Track  Channeler 
Undercutting  Channeler  Broncho  Channeler 

Quarry  Bar  Gadder 


30 


Ingersoll-Sergeant  Products 
•  •  • 

Haeseler  Chipping  and  Riveting  Hammers 

Haeseler  Rotary  and  Piston  Drills 
Pohle    and    Saunders    Air    Lift  Systems 
Coal  Cutters  and  Drills 
Drift    Bolt  and    Pile  Drivers 

Tamping  Machines 
Air  Receivers  and  Reheaters 
Hose  and  Hose  Couplings 

31 


Driving  tl)c  finv  Porn  suinuav 


No.  5.    Catalog — Labor  Saving  Tools,  Operated  l>y  Com- 

pressed  air. 
No.  35.    Catalog — Air  Compressors. 

No.  43.    Calalog — Rock    Drills,    Mining    and  Quarrying 
Machinery. 

No.  51.    Catalog — Compressed  Air  vs.  Electricity  in  Coal 
Mines. 

No.  81.  Catalog — Flowing/ >il  Wells  with  Compressed  Air. 
No.  109.  Pamphlet — Compressed  Air  in  Railroad  Shops. 
No.  146.    Booklet — The  use  of  Compressed  Air   in  the 

Monon  Railroad  Shops. 
No.  147.    Booklet — Pumping  Water   by  Compressed  Air 

at  Dixon,  111. 

No.  148.  Booklet — Model  Compressed  Air  Foundry  Plant. 
No.  154.    Booklet — Rock  Drill. 

No.  167.    Booklet — Abundant  Pure  Water  Underground. 
The  Air  Lift. 

No.  193.    Booklet — Baldwin  Acetylene  Lamp  for  Mines. 
No.  242.    Booklet — Moving  roo,ooo  Tons  of  Rock.  Rock 


No.  254.  Booklet — Rock  Drill  Estimate. 

No.  322.  Booklet — The  "  Broncho  "  Channeler. 

No.  337.  Pamphlet — Before  and  After.  Quarrying. 

.No.  340.  Booklet — Blue  Book  of  Air  Compressors* 

No.  540.  Booklet— The  City  of  Rockford.    Rock  Drills 


Drills. 


Harriett  &  Compa 
The  Orr  Press 
New  York 


AVEKY  | 


